div
        {
            color: rgb(109, 179, 19);
            width: 200px;
            height: 100px;
            border: 15px red dashed;
            margin-bottom: 5px;
        }

        .test-named-color {
            background-color: aquamarine;
        }
        .test-rgb{
            background-color:rgb(113, 131, 90) ;
        }
        .test-sixteen{
            background-color: #331089;
        }
        .test-hsl{

            background-color:hsl(150,30%,60%) ;
        }
        .test-hsla{
             background-color:hsla(86, 40%, 20%, 40%) ;
        }
        .test-opacity{
            background-color: rgba(255,0,0,1);
        }
        .test-opacity:hover{
            background-color: rgba(255,0,0,0.3);
        }